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   Home   Help Search  
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Author Topic: 6 character grid locator  (Read 1130 times)
NU0R
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Posts: 408




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« on: February 19, 2006, 05:25:18 PM »

OK I am really confused. I have looked at about 6 different web sites and each one puts me in a different locator. The big problem is most are about 100 to 175 miles from where I am located--not good! I can see from the U>S> grid square map that I am probably in EM27 but when I try to get the last two characters it gets confusing. Does anyone have a site in mind where I can get my 6 digit grid locator? I am not an ARRL member so am probably limited in navigating thier sites. Any help would be greatly appreciated. By the way, different web sites give different longitude and latitude for my city, Carthage, Mo. 64836. I am not even sure of the correct long/latitude coordinates.HELP PLEASE!
                        Thanks Bruce, NU0R
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N6AJR
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Posts: 9930




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« Reply #1 on: February 19, 2006, 05:36:44 PM »

EM27ue

that is what I get at qrz.com.. you canuse a gps gizmo and find your exact location and then plug that in to any number of  programs to find  your exact GS  or maidenhead square.

http://earth.google.com/

 mite help ,  do a search on google for grid square locaters, I had one somewhere and I found my house on a photo map and then when I put the x on my house, it gave me my lat and lon
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N5NA
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Posts: 221




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« Reply #2 on: February 19, 2006, 05:49:45 PM »

My map program gives a lat/long for your address as 32 deg 10' 32" N & 94 deg 19' 23" W.

Just plug that into the ARRL grid calculator at http://www.arrl.org/locate/grid.html (I don't believe you have to be a member to use it.) and you get EM27ue as stated previously.

If you have a GPS you can get the grid square directly from the GPS by setting the system to Maidenhead.

73,

Alan

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NU0R
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Posts: 408




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« Reply #3 on: February 19, 2006, 06:28:37 PM »

Thanks guys , I really appreciate the info.
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K7VO
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Posts: 1014




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« Reply #4 on: February 19, 2006, 09:02:28 PM »

One little note:  QRZ uses addresses from the FCC database but calculates grids from the center of the zip code.  If you manually enter your latitude and longitude (an option on qrz.com) it then gives an accurate result.  

73,
Caity
K7VO/9
EN54xq
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WILLY
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Posts: 286




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« Reply #5 on: February 20, 2006, 07:17:01 AM »

 by NU0R on February 19, 2006     

"- - -
 Any help would be greatly appreciated. By the way, different web sites give different longitude and latitude for my city, Carthage, Mo. 64836. I am not even sure of the correct long/latitude coordinates.HELP PLEASE "


Try this:
http://mapper.acme.com/
http://mapper.acme.com/instructions.html

Using your address found with a callsign lookup, it goes here:
http://mapper.acme.com/?lat=37.175363&long=-94.323155&scale=12&theme=Image&width=3&height=2&dot=Yes
The latitude and longitude it yields are close to those on your details page at qrz.com, so it must be in the general area.

You could start there, zoom in and out, and walk the view around until you find your location.  Read the lat/long.    Then you'll need a site to convert.


Perhaps someone with a handheld GPS would like to try it, and post here to let us know how accurate the lat/long given by the mapper really is.


73
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WA9SVD
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Posts: 2198




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« Reply #6 on: February 21, 2006, 07:15:27 AM »

I originally had a similar question.  When I bought  GPS, it gave a different 6 character grid square that was listed in the various databases.  I also checked MapQuest, and it too was off by several hundred feet, putting my location over a block (and the other side of a major street) from where I actually live,  (Either that, or I;m in the wrong house...)
    Garmin said the MapQuest, and probably the database info, come from street addresses after maps ae digitized, and there are innacuracies that creep in.  They said the GPS will always be more accurate than the digitized map information.  I subsequently updated my QSL cards and some of the databases.
    But the six character grid square is nice to know, but at this time, only the four character GS is necessary for contests, etc.  And the ARRL said it's not necessary to worry about the last two characters in a GS for their contests; you go with what ever info is available; either the database 4 character Grid Square, OR a GPS.  Just don't mix the two, and when all else fails, guestimate as best as you can.  (Like in the old days before Internet Databases, and GPS)  Just use a map and take your best guess!)    
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WILLY
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Posts: 286




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« Reply #7 on: February 23, 2006, 08:16:23 AM »

 
You might like to visit:
http://www.keplerian.com/

Free software by W4SM.   Looks very nice!

One of them is described:
"  "New Improved" WinGrid Ver4.1 (wingrid.exe)  This program calculates grid squares from latitudes and longitudes, the reverse, and calculates distances and headings from two sets of lat/long or grid squares. The program saves your home QTH information. Click on "DISTANCE" to convert from miles to kilometers.  ...."

Obviously it is Windows software.

It calculates the grid square to 6 characters.

This is worth a few minutes of your time to check out.


73
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